| pcrtc.c (90007) | pcrtc.c (92793) |
|---|---|
| 1/*- 2 * Copyright (c) 1990 The Regents of the University of California. 3 * All rights reserved. 4 * 5 * This code is derived from software contributed to Berkeley by 6 * William Jolitz and Don Ahn. 7 * 8 * Redistribution and use in source and binary forms, with or without --- 20 unchanged lines hidden (view full) --- 29 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 30 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 31 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 32 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 33 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 34 * SUCH DAMAGE. 35 * 36 * from: @(#)clock.c 7.2 (Berkeley) 5/12/91 | 1/*- 2 * Copyright (c) 1990 The Regents of the University of California. 3 * All rights reserved. 4 * 5 * This code is derived from software contributed to Berkeley by 6 * William Jolitz and Don Ahn. 7 * 8 * Redistribution and use in source and binary forms, with or without --- 20 unchanged lines hidden (view full) --- 29 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 30 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 31 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 32 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 33 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 34 * SUCH DAMAGE. 35 * 36 * from: @(#)clock.c 7.2 (Berkeley) 5/12/91 |
| 37 * $FreeBSD: head/sys/pc98/cbus/pcrtc.c 90007 2002-01-31 04:28:52Z nyan $ | 37 * $FreeBSD: head/sys/pc98/cbus/pcrtc.c 92793 2002-03-20 12:22:31Z kato $ |
| 38 */ 39 40/* 41 * Routines to handle clock hardware. 42 */ 43 44/* 45 * inittodr, settodr and support routines written --- 58 unchanged lines hidden (view full) --- 104#ifdef DEV_MCA 105#include <i386/isa/mca_machdep.h> 106#endif 107 108#ifdef APIC_IO 109#include <i386/isa/intr_machdep.h> 110/* The interrupt triggered by the 8254 (timer) chip */ 111int apic_8254_intr; | 38 */ 39 40/* 41 * Routines to handle clock hardware. 42 */ 43 44/* 45 * inittodr, settodr and support routines written --- 58 unchanged lines hidden (view full) --- 104#ifdef DEV_MCA 105#include <i386/isa/mca_machdep.h> 106#endif 107 108#ifdef APIC_IO 109#include <i386/isa/intr_machdep.h> 110/* The interrupt triggered by the 8254 (timer) chip */ 111int apic_8254_intr; |
| 112static u_long read_intr_count __P((int vec)); 113static void setup_8254_mixed_mode __P((void)); | 112static u_long read_intr_count(int vec); 113static void setup_8254_mixed_mode(void); |
| 114#endif 115 116/* 117 * 32-bit time_t's can't reach leap years before 1904 or after 2036, so we 118 * can use a simple formula for leap years. 119 */ 120#define LEAPYEAR(y) ((u_int)(y) % 4 == 0) 121#define DAYSPERYEAR (31+28+31+30+31+30+31+31+30+31+30+31) --- 42 unchanged lines hidden (view full) --- 164static u_int32_t i8254_offset; 165static int i8254_ticked; 166/* 167 * XXX new_function and timer_func should not handle clockframes, but 168 * timer_func currently needs to hold hardclock to handle the 169 * timer0_state == 0 case. We should use inthand_add()/inthand_remove() 170 * to switch between clkintr() and a slightly different timerintr(). 171 */ | 114#endif 115 116/* 117 * 32-bit time_t's can't reach leap years before 1904 or after 2036, so we 118 * can use a simple formula for leap years. 119 */ 120#define LEAPYEAR(y) ((u_int)(y) % 4 == 0) 121#define DAYSPERYEAR (31+28+31+30+31+30+31+31+30+31+30+31) --- 42 unchanged lines hidden (view full) --- 164static u_int32_t i8254_offset; 165static int i8254_ticked; 166/* 167 * XXX new_function and timer_func should not handle clockframes, but 168 * timer_func currently needs to hold hardclock to handle the 169 * timer0_state == 0 case. We should use inthand_add()/inthand_remove() 170 * to switch between clkintr() and a slightly different timerintr(). 171 */ |
| 172static void (*new_function) __P((struct clockframe *frame)); | 172static void (*new_function)(struct clockframe *frame); |
| 173static u_int new_rate; 174#ifndef PC98 175static u_char rtc_statusa = RTCSA_DIVIDER | RTCSA_NOPROF; 176static u_char rtc_statusb = RTCSB_24HR | RTCSB_PINTR; 177#endif 178static u_int timer0_prescaler_count; 179 180/* Values for timerX_state: */ 181#define RELEASED 0 182#define RELEASE_PENDING 1 183#define ACQUIRED 2 184#define ACQUIRE_PENDING 3 185 186static u_char timer0_state; 187#ifdef PC98 188static u_char timer1_state; 189#endif 190static u_char timer2_state; | 173static u_int new_rate; 174#ifndef PC98 175static u_char rtc_statusa = RTCSA_DIVIDER | RTCSA_NOPROF; 176static u_char rtc_statusb = RTCSB_24HR | RTCSB_PINTR; 177#endif 178static u_int timer0_prescaler_count; 179 180/* Values for timerX_state: */ 181#define RELEASED 0 182#define RELEASE_PENDING 1 183#define ACQUIRED 2 184#define ACQUIRE_PENDING 3 185 186static u_char timer0_state; 187#ifdef PC98 188static u_char timer1_state; 189#endif 190static u_char timer2_state; |
| 191static void (*timer_func) __P((struct clockframe *frame)) = hardclock; | 191static void (*timer_func)(struct clockframe *frame) = hardclock; |
| 192#ifdef PC98 | 192#ifdef PC98 |
| 193static void rtc_serialcombit __P((int)); 194static void rtc_serialcom __P((int)); 195static int rtc_inb __P((void)); 196static void rtc_outb __P((int)); | 193static void rtc_serialcombit(int); 194static void rtc_serialcom(int); 195static int rtc_inb(void); 196static void rtc_outb(int); |
| 197#endif 198 | 197#endif 198 |
| 199static unsigned i8254_get_timecount __P((struct timecounter *tc)); 200static unsigned tsc_get_timecount __P((struct timecounter *tc)); | 199static unsigned i8254_get_timecount(struct timecounter *tc); 200static unsigned tsc_get_timecount(struct timecounter *tc); |
| 201static void set_timer_freq(u_int freq, int intr_freq); 202 203static struct timecounter tsc_timecounter = { 204 tsc_get_timecount, /* get_timecount */ 205 0, /* no poll_pps */ 206 ~0u, /* counter_mask */ 207 0, /* frequency */ 208 "TSC" /* name */ --- 90 unchanged lines hidden (view full) --- 299 outb(0x61, inb(0x61) | 0x80); 300#endif 301} 302 303/* 304 * The acquire and release functions must be called at ipl >= splclock(). 305 */ 306int | 201static void set_timer_freq(u_int freq, int intr_freq); 202 203static struct timecounter tsc_timecounter = { 204 tsc_get_timecount, /* get_timecount */ 205 0, /* no poll_pps */ 206 ~0u, /* counter_mask */ 207 0, /* frequency */ 208 "TSC" /* name */ --- 90 unchanged lines hidden (view full) --- 299 outb(0x61, inb(0x61) | 0x80); 300#endif 301} 302 303/* 304 * The acquire and release functions must be called at ipl >= splclock(). 305 */ 306int |
| 307acquire_timer0(int rate, void (*function) __P((struct clockframe *frame))) | 307acquire_timer0(int rate, void (*function)(struct clockframe *frame)) |
| 308{ 309 static int old_rate; 310 311 if (rate <= 0 || rate > TIMER0_MAX_FREQ) 312 return (-1); 313 switch (timer0_state) { 314 315 case RELEASED: --- 1351 unchanged lines hidden --- | 308{ 309 static int old_rate; 310 311 if (rate <= 0 || rate > TIMER0_MAX_FREQ) 312 return (-1); 313 switch (timer0_state) { 314 315 case RELEASED: --- 1351 unchanged lines hidden --- |